Configuration Type: Public v1.0 configuration. Identical to response_files_v0.8.1.json except that THROUGHPUT_SCALE_FACTOR is 0.8 rather than 1.0, de-rating the FUV, NUV and LSS bandpasses by 20% for public release.
| Entry | Description | Type | Source | Value |
|---|---|---|---|---|
| EPD | Entrance Pupil Diameter (cm) | By design | Optical Model | 75 |
| N_PIXELS | Number of pixels along each edge of the 4k x 4k detectors | By Design | CMOS Description | 4096 |
| PIXEL_UM | UVEX physical pixel size (microns) | By Design | CMOS Description | 10 |
| PLATE_SCALE | UVEX Imager Plate Scale (arcsec / pixel) | By Design | Optical Design | 1.03 |
| SPEC_PLATE_SCALE | UVEX LSS Plate Scale (arcsec / pixel) | By Design | Optical Design | 0.8 |
| NPIX_IMG | Number of effective pixels in the imager photometric aperture for a 2-arcsec FWHM PSF. Sets how many pixels of dark current and read noise enter the imaging SNR. | model | uvex_mission_v0.8.1 | 10.15 |
| NPIX_LSS | Number of effective vertical pixels in the LSS spectral extraction for a 2-arcsec FWHM PSF. Sets how many pixels of dark current and read noise enter the spectroscopic SNR, before scaling by the slit width and spectral resolution. | model | uvex_mission_v0.8.1 | 3 |
| LSS_SLIT_THROUGHPUT | Fraction of a point source's flux that passes through the LSS slit, applied as a scalar multiplier on the LSS throughput. Value for a Gaussian PSF centered on the 2-arcsec slit, using the v0.8.1 ETC's 2.25-arcsec LSS PSF HPD. | model | uvex_mission_v0.8.1 | 0.6944 |
| THROUGHPUT_SCALE_FACTOR | Scalar multiplier applied to the FUV, NUV and LSS bandpasses (including the LSS Lyman-alpha response) after every wavelength-dependent component has been combined. 1.0 leaves the modelled throughput as-is; a value below 1.0 de-rates the whole response to cover end-to-end losses that the individual component curves do not capture. | processing choice | uvex_response | 0.8 |
| vignetting_method | How the 2D vignetting map is reduced to a single scalar throughput factor applied to the bandpass. 'min' takes the minimum throughput over the field of view | processing choice | uvex_response | min |
| nuv_filter_toggle | Whether to apply the standalone nuv_filter transmission on top of the NUV detector QE in the NUV bandpass | processing choice | uvex_response | True |
| Entry | Description | Type | Source | Value |
|---|---|---|---|---|
| geometry_slit_length | UVEX LSS slit length (arcsec) | By Design | Instrument Design | 3600 |
| geometry_slit_width | UVEX LSS slit width (arcsec) | By Design | Instrument Design | 2 |
| geometry_slit_xy | UVEX LSS slit position relative to boresight (x,y in arcsec) | By Design | Instrument Design | 12600,0 |
| geometry_im_gap_x | Gap between imager detectors in the X direction (mm) | By Design | Instrument Design | 4.05 |
| geometry_im_gap_y | Gap between imager detectors in the Y direction (mm) | By Design | Instrument Design | 2.55 |
| geometry_lss_gap_x | Gap between LSS detectors in the X direction (mm) | By Design | Instrument Design | 0.616 |
| geometry_lss_xy1 | Position of the LSS-short detector in the LSS plane (x,y in mm) | By Design | Instrument Design | -5.874,0.0 |
| optics | JPL 24 nm MgF2 / Al mirror coating reflectivity model | model | jpl_24nm_mgf2_al | optics/response_files/optics_jpl_24nmMgF2Al_model.dat |
| fuv_detector | JPL 7-layer coating with a band center at 150 nm, dated 2025-05-22 | model | jpl_150nmcenter_detector_20250522 | fuv_detector/response_files/fuv_detector_150nmcenter_detector_20250522.dat |
| nuv_detector | JPL single-layer HfO2 anti-reflection coating | model | jpl_single_layer_HfO2 | nuv_detector/response_files/nuv_detector_jpl_single_layer_HfO2.dat |
| nuv_filter | Standalone Materion NUV bandpass filter transmission, ported from v0.8.1 of uvex-mission for benchmarking; applied on top of the NUV detector QE | model | materion | nuv_filter/response_files/nuv_filter_materion.dat |
| dichroic | Acton 180-nm split dichroic model with 10 mm fused silica substrate, AOI-weighted average over 20-40 degree angles of incidence | model | acton_180_dichroic_model_aoi_average | reflection: dichroic/response_files/dichroic_A180_model_reflection.dat transmission: dichroic/response_files/dichroic_A180_model_transmission.dat |
| lss_blaze | LSS grating blaze / first-order diffraction efficiency, ported from v0.8.1 uvex-mission (zeiss spectrometer setup) | model | zeiss | lss_blaze/response_files/lss_blaze_zeiss.dat |
| lss_detector | LSS spectrometer detector response (graded-overcoat tapered QE, detector coating and QE combined), ported from v0.8.1 uvex-mission; 'response' is the nominal curve and 'lyman' the Lyman-alpha-specific response | model | graded_overcoat_00nm | response: lss_detector/response_files/lss_detector_graded_overcoat.dat lyman: lss_detector/response_files/lss_detector_graded_overcoat_lyman.dat |
| lss_dispersion | LSS wavelength dispersion / resolution mapping (WAVE, YPOS, DISPERSION nm/pix, SLIT WIDTH, RESOLUTION), stored as a verbatim pass-through of the v0.8.1 uvex-mission file for downstream wavelength-solution use; not a multiplicative bandpass component | model | UVEXS_Spectral_Resolution_R2000 (zeiss / R2000 setup) | lss_dispersion/response_files/lss_dispersion_R2000.txt |
| contamination_fuv | Contamination transmission losses along the FUV optical path (OTA mirrors, dichroic, detector surface) at end of life, ported from the v0.8.1 uvex-mission model: exp(-absorption_coeff * effective_thickness) | model | uvex_mission_v0.8.1 | contamination/response_files/contamination_v0.8.1_fuv_eol.dat |
| contamination_nuv | Contamination transmission losses along the NUV optical path (OTA mirrors, dichroic, detector surface) at end of life, ported from the v0.8.1 uvex-mission model: exp(-absorption_coeff * effective_thickness) | model | uvex_mission_v0.8.1 | contamination/response_files/contamination_v0.8.1_nuv_eol.dat |
| contamination_lss | Contamination transmission losses along the LSS optical path (OTA + relay mirrors, grating, detector surface) at end of life, ported from the v0.8.1 uvex-mission model: exp(-absorption_coeff * effective_thickness) | model | uvex_mission_v0.8.1 | contamination/response_files/contamination_v0.8.1_lss_eol.dat |
| vignetting_fuv | Fucik 2026-03-16 ray-trace vignetting map for the FUV detector, masked to the detector footprint | model | fucik2026 | vignetting/response_files/vignetting_fucik2026_fuv_masked.fits |
| vignetting_nuv | Fucik 2026-03-16 ray-trace vignetting map for the NUV detector, masked to the detector footprint | model | fucik2026 | vignetting/response_files/vignetting_fucik2026_nuv_masked.fits |
| dark_current_fuv | Dark current in units of electrons per second per pixel for the FUV detectors | model | Current Estimates | 0.001 |
| dark_current_nuv | Dark current in units of electrons per second per pixel for the NUV detectors | model | Current Estimates | 0.001 |
| dark_current_lss | Dark current in units of electrons per second per pixel for the LSS detectors | model | Current Estimates | 0.001 |
| read_noise_fuv | Read noise in units of electrons rms per pixel for the FUV detectors | model | Current Estimates | 2 |
| read_noise_nuv | Read noise in units of electrons rms per pixel for the NUV detectors | model | Current Estimates | 2 |
| read_noise_lss | Read noise in units of electrons rms per pixel for the LSS detectors | model | Current Estimates | 2 |